As the case between Kesha Rose Sebert and Lukasz Gottwald continues to send shockwaves through the music industry, ET takes a look back at the early days of the pair's professional relationship, the alleged spark that fueled Kesha's bombshell legal filing, how Dr. Luke has responded, and what's next for their legal teams.

THE BACKGROUND:
Kesha was signed to Dr. Luke's Kemosabe Entertainment label and Prescription Songs music publishing company in 2005 when she was 18 years old. The producer gave Kesha her big break in 2008, when he used her vocals on Flo Rida's song, "Right Round." However, Kesha was not formally credited on the song and claims she has never been financially compensated for her work on the track.

The singer's subsequent albums, 2010's Animal and 2012's Warrior, were both released under Dr. Luke's label. Animal hit No. 1 on the Billboard 200 and has achieved platinum certification by the RIAA in the United States.

THE ALLEGATIONS:
Kesha sued Dr. Luke on Oct. 14, 2014, accusing him of abusing her over the course of 10 years. "Dr. Luke abused Ms. Sebert in order to destroy her self-confidence, self-image, and self-worth so that he could maintain complete control over her life and career," the lawsuit read.

The document specifically accused Dr. Luke of drugging and raping Kesha. "He threatened that if she ever mentioned the rape to anyone, he would shut her career down," the suit alleged, "and otherwise destroy not only her life but her entire family's lives as well." Dr. Luke has denied all wrongdoing.

While Kesha alleged that she had been mistreated for some time, she claimed to be finally taking action because, according to her lawsuit, doctors concluded that Dr. Luke had "physically and psychologically damaged" her to the point that continuing to work under her contract with him would be "life threatening."

Requesting a preliminary injunction that would allow her to get out of her record contract with Kemosabe Records, Kesha also claimed that Dr. Luke had refused to re-negotiate her contract following the success of her first album.

Pop star Kesha leaves Supreme court in New York, Friday, Feb. 19, 2016. Kesha is fighting to wrest her career away from a hitmaker she says drugged, sexually abused and psychologically tormented her _ and still has exclusive rights to make records with her. Producer Dr. Luke says the singer is slinging falsehoods and ruining his reputation to try to weasel out of her recording contract and strike a new deal. (AP Photo/Mary Altaffer)

NEW YORK, NY - FEBRUARY 19: Kesha makes a court appearance as fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

Kesha arrives for an appearance in her case against Sony Music Entertainment at New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make three more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by James Devaney/GC Images)

NEW YORK, NY - FEBRUARY 19: Michael Eisley who runs the Kesha Today Twitter account organized Kesha fans to protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

NEW YORK, NY - FEBRUARY 19: People cheer as singer Kesha is seen arriving at New York State Supreme Court at on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make three more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Raymond Hall/GC Images)

NEW YORK, NY - FEBRUARY 19: Kesha fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

NEW YORK, NY - FEBRUARY 19: Kesha fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

(Pool photo by Jefferson Siegel) - Kesha (center in white) cries as she learns she will not be released from her record label contract in Manhattan Supreme Court on Friday, February 19, 2016. A judge said she would not allow Kesha to leave her record label. (Pool Photo by Jefferson Siegel/NY Daily News via Getty Images)

(Pool photo by Jefferson Siegel) - Kesha (center in white) cries as she learns she will not be released from her record label contract in Manhattan Supreme Court on Friday, February 19, 2016. A judge said she would not allow Kesha to leave her record label. (Pool Photo by Jefferson Siegel/NY Daily News via Getty Images)

A fan, right, screams her support at pop star Kesha as she leaves Supreme court in New York, Friday, Feb. 19, 2016. Kesha is fighting to wrest her career away from a hitmaker she says drugged, sexually abused and psychologically tormented her _ and still has exclusive rights to make records with her. Producer Dr. Luke says the singer is slinging falsehoods and ruining his reputation to try to weasel out of her recording contract and strike a new deal. (AP Photo/Mary Altaffer)

Pop star Kesha, center, leaves Supreme court in New York, Friday, Feb. 19, 2016. Kesha is fighting to wrest her career away from a hitmaker she says drugged, sexually abused and psychologically tormented her _ and still has exclusive rights to make records with her. Producer Dr. Luke says the singer is slinging falsehoods and ruining his reputation to try to weasel out of her recording contract and strike a new deal. (AP Photo/Mary Altaffer)

NEW YORK, NY - FEBRUARY 19: Kesha fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

NEW YORK, NY - FEBRUARY 19: Kesha fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

NEW YORK, NY - FEBRUARY 19: Kesha fans protest Sony Music Entertainment outside New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make eight more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Roy Rochlin/Getty Images)

Pop star Kesha, center, leaves Supreme court in New York, Friday, Feb. 19, 2016. Kesha is fighting to wrest her career away from a hitmaker she says drugged, sexually abused and psychologically tormented her _ and still has exclusive rights to make records with her. Producer Dr. Luke says the singer is slinging falsehoods and ruining his reputation to try to weasel out of her recording contract and strike a new deal. (AP Photo/Mary Altaffer)

NEW YORK, NY - FEBRUARY 19: Kesha leaves the New York State Supreme Court on February 19, 2016 in New York City. Sony has refused to voluntarily release the pop star from her contract which requires her to make three more albums with producer Dr. Luke, a man she claims sexually assaulted her. (Photo by Raymond Hall/GC Images)

THE COUNTERSUIT:
Just one day after Kesha's shocking filing, Dr. Luke issued a countersuit that denied all abuse allegations while accusing Kesha and her mother of attempting to "extort" him into releasing her from the recording contract.

"In 2005, Gottwald [Dr. Luke] discovered Kesha -- who at the time was completely unknown -- and signed her to a record deal," the filing claimed. "He proceeded to devote significant time and effort into her career, ultimately turning her into the prominent platinum-selling artist that she is today."

Additionally, Dr. Luke filed suit against Kesha's mother, Pebe Sebert, and manager, Jack Rovner, accusing them of convincing Kesha to question her contract's validity and citing a "long history of animus" between him and Rovner.

THE RULING:
On Feb. 4, 2016, New York Supreme Court Justice Shirley Kornreich dismissed Dr. Luke's suit against Sebert and Rovner, ruling that Rovner was acting within the scope of his duties as her manager and that there was no jurisdiction over Sebert in the state of New York.

However, Dr. Luke had also filed a parallel complaint against Sebert in the state of Tennessee -- just in case the New York case was tossed. A ruling has not yet been reached in the Tennessee case.

On Feb. 19, 2016, New York Supreme Court Justice Shirley Kornreich denied Kesha's request to be let out of her contract with Sony Music (which owns Kemosabe Records) and ruled that the court would not "decimate a contract that was heavily negotiated."

The decision was made after Dr. Luke and Sony's attorneys claimed that the label had invested greatly into Kesha's career and had agreed to let her to record without Dr. Luke. "She was highly successful with her first album," their legal team argued. "Sony would like nothing more than to see [Kesha record another album]."

The judge also, on multiple occasions, said that she wasn't seeing enough evidence to corroborate Kesha's claims of abuse and sexual assault. "What disturbs me is the lack of facts," Kornreich said.

WHAT'S NEXT:
As the case appears to be moving towards a trial, attorneys for both parties are expected to meet on May 5, 2016 for a preliminary phone conference, followed by a lengthy discovery period, in which each side will collect evidence.

If there are no delays, the plaintiff will be able to file a document on Feb. 28, 2017 requesting to have a trial date set by a judge -- though the actual trial date could be set for months later.

In lieu of going to trial, it's possible that Kesha and Dr. Luke could decide to settle out of court sooner in an effort to minimize damage to the former's career and the latter's reputation.

THE MEDIA MELEE:
In the wake of Friday's ruling, after Kesha was not released from her record contract, social media exploded with #FreeKesha declarations from the singer's fans and peers alike.

Among the most vocal celebrities offering their support were Lady Gaga, Lena Dunham, Lorde, Ariana Grande, Iggy Azalea, Zedd, Halsey, Jack Antonoff, and Taylor Swift, who donated $250,000 to help Kesha "with any of her financial needs during this trying time."

Meanwhile, Dr. Luke took to Twitter to maintain his innocence and take the social media jury to task.

"I didn't rape Kesha and I have never had sex with her. Kesha and I were friends for many years and she was like my little sister," he wrote. "This is an ongoing legal case so I won't be responding/talking much about this. This should be tried in a court of law."